SI2435FT18-EVB Silicon Laboratories Inc, SI2435FT18-EVB Datasheet

SI2435FT18-EVB

Manufacturer Part Number

SI2435FT18-EVB

Description

FAX-ISOMODEM EVALUATION BOARD

Manufacturer

Silicon Laboratories Inc

Datasheet

1.SI2435FT18-EVB.pdf (32 pages)

Specifications of SI2435FT18-EVB

Lead_time

Pack_quantity

Comm_code

85437090

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E v a l u a t i o n B o a r d f o r t h e S i 2 4 3 5 / 1 7 w i t h a

U A R T I n t e r f a c e

Description

The global Si2435/17-EVB evaluation board provides

the system designer an easy way of evaluating the

Si2435/17 Fax ISOmodem

consists of a motherboard with a power supply, an RS-

232 and USB interface, other ease-of-use features, and

a complete removable modem module on a daughter

card. (A functional block diagram of the Si2435/17-EVB

is shown below.) The Si2435/17 ISOmodem is a

complete controller-based modem chipset with an

integrated

arrangement (DAA) that meets global telephone line

requirements. Available as a combination of one 16-pin

small line-side device and one 24-pin system-side

device, the Si2435/17 ISOmodem eliminates the need

for a separate DSP data pump, modem controller,

memories, codec, isolation transformer, relays, opto-

isolators, and a 2- to 4-wire hybrid. The Si2435/17 is

ideal for embedded fax modem applications due to its

small board area, controller-based architecture, low

power consumption, and global compliance. The

Si2435/17-EVB provides an RJ-11 jack (for interfacing

the Si2435/17-EVB to the phone line), and USB and

RS232 serial ports for interfacing to a PC or host. This

allows the ISOmodem to operate as a Class 1 modem

for straightforward evaluation of the Si2435/17. To

evaluate the Si2435/17 ISOmodem in an embedded

system, the daughter card can be used independently

of or with the motherboard. A direct access header

(JP3) is available on the motherboard to bypass the RS-

232 transceivers and connect the Si2435/17 Fax

ISOmodem directly to a target system.

Functional Block Diagram

Rev. 1.0 12/06

7.5–13.5 V dc or

and

Connector

peak ac

UART

USB

9 V dc at 300 mA ac

programmable

DB9

Adaptor

Rectifier

Filter

USB I/F

Transceivers

. The Si2435/17-EVB

Regulator

RS-232

Voltage

5 V

G l o b a l F a x I S O m o d e m - E V B

direct

3.3 V

Selection

Interface

Jumpers

Push Button

Power-On

Reset

Access HDR

access

Direct

RESET

Interboard

Connector

PCM

PCM Data/

Control

Si2435/17

An onboard rectifier, filter, and voltage regulator allow

the power input to be 7.5–13 V ac or dc (either polarity)

supplied through a screw terminal (J3) or a standard

2 mm power jack (J4). Alternatively, power can be

supplied through the USB interface (whether the USB or

RS232 interface is used). The evaluation board can

drive an external speaker for call monitoring or the

piezoelectric speaker mounted directly on the board.

Please note that the PCM interface, parallel interface,

and EEPROM are available on the FT only. The Si2435/

17 devices require a software driver in order to

implement fax send/receive functionality. The driver

must be compliant with the Si2435/17 and with the

applicable ITU-T standards (e.g. T.30, T.31, T.4, and

T.6). Contact Silicon Laboratories for details.

Features

The Si2435/17-EVB includes the following:

XTALO

Dual RJ-11 connection to phone line

RS-232 and USB interface to PC

Piezoelectric speaker for call monitoring

Direct access to Si2435/17 for embedded

application evaluation

Easy power connection to common 7.5 V–13.5 V

power supplies or USB port

9 V ac adaptor

Support for daisy chain operation with Si3000 voice

codec

Simple installation and operation

Requires a Class A (ITU-T T.31) fax driver

Amplifier

AOUT

XTALI

Audio

Out

Daughter Board Boundary

Si3018*

Interface

Circuit

RJ-11

Si2435/17FT18-EVB

Phone

line

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